Pure Water in a Small Package: Under-the-sink Reverse Osmosis Systems

Under-the-sink reverse osmosis filter systems are a type of residential reverse osmosis filtration system that can be installed under the kitchen sink. This is the most affordable type of reverse osmosis filter system. The package usually includes a pre-assembled reverse osmosis filter system, 3.2 gallon tank to store the reverse osmosis water, an additional faucet to dispense the reverse osmosis water, and a set of tubes and fittings to connect the reverse osmosis filter system to the feed water and drain lines. Reverse osmosis filter systems usually include one or two preinstalled pre-treatment filters, a reverse osmosis membrane and post-filter.


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